"All the martyrs in the history of the world are not sufficient to establish the correctness of an opinion. Martyrdom, as a rule, establishes the sincerity of the martyr, — never the correctness of his thought. Things are true or false in themselves. Truth cannot be affected by opinions; it cannot be changed, established, or affected by martyrdom. An error cannot be believed sincerely enough to make it a truth."
Robert G. Ingersoll
(1833-1899) American lawyer, Civil War veteran, political leader, orator of United States during the Golden Age of Free Thought, nicknamed "The Great Agnostic"
The Great Infidels (1881)